Idk what I'm gonna kill here but I'm treating ich - x. I'm hoping my shrimp, snails, and crabs make it through the treatments and it solves my problems. I think this all started with my heater going down. My water temp was swinging pretty far up n down. Dropped to 72 the one morning. Pretty glad I don't have corals yet. I will be buying a used bio cube in the near future for a qt tank. That's for sure.